Cosmetic-containing herbals are a cosmetic that has or is claimed to have medicinal properties, with bioactive ingredients purported to have medical benefits. There are no legal requirements to prove ...that these products live up to their claims. The name is a combination of "cosmetics" and "pharmaceuticals". "Nutricosmetics" are related dietary supplements or food or beverage products with additives that are marketed as having medical benefits that affect appearance. Cosmetic-containing herbals are topical cosmetic-pharmaceutical hybrids intended to enhance the health and beauty of the skin. Cosmetic-containing herbals improve appearance by delivering essential nutrients to the skin. Several herbal products, such as cosmetic-containing herbals, are available. The present review highlights the use of natural products in cosmetic-containing herbals, as natural products have many curative effects as well as healing effects on skin and hair growth with minimal to no side effects. A brief description is given on such plants, their used parts, active ingredients, and the therapeutic properties associated with them. Mainly, the utilization of phytoconstituents as cosmetic-containing herbals in the care of skin and hair, such as dryness of skin, acne, eczema, inflammation of the skin, aging, hair growth, and dandruff, along with natural ingredients, such as for hair colorant, are explained in detail in the present review.
The effects of gamma -irradiation on solid poly(ethylene oxide) (PEO) of an initial weight-average molecular weight of 6.310 exp 5 Da were investigated by gel permeation chromatography and ...viscometry. The parameters studied were changes in number- and weight-average molecular weight, molecular weight distribution and viscosity of PEO in aqueous solution. Irradiation of poly(ethylene oxide) powder in the presence of oxygen leads to the dominance of chain scission reactions. Their high radiation-chemical yield G(scission) approx = 2.510 exp -6 mol/J indicates the occurrence of effective chain reactions. Upon irradiation in vacuum, crosslinking and scission occur side-by-side and the changes in molecular weight are less pronounced in the studied dose range (up to 20 kGy). Scission dominates for doses up to ca. 15 kGy, while for higher doses intermolecular crosslinking gains in importance. The competition between these processes seems to depend not only on the applied dose but also to be influenced by the inhomogeneity of the material (molecular weight and/or possibly the crystallinity). Parallel occurrence of scission and crosslinking leads to the broadening of the molecular weight distribution.
Ecotoxicology of Aluminum Barabasz, W; Albinska, D; Jaskowska, M ...
Polish journal of environmental studies,
01/2002, Letnik:
11, Številka:
3
Journal Article
Recenzirano
The third most abundant element in the crust of the Earth is aluminum, a metal that forms a diverse array of mineral and organic complexes characterized by different levels of hydration. Several ...factors contribute to the important role played by Al in the environment, including its easy transition from solid to liquid phase and its high solubility in acidic environments. Findings from recent analyses of the environmental toxicology of Al have suggested that Al may cause diseases in humans, animals, and plants. Acidic rains and increasing acidification of the environment have induced widespread changes in water and soil pH that have caused mobilization of toxic Al ions. These processes have caused many environmental problems, including plant poisoning, forest drying, and reductions of aquatic fauna.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
Salix lapponum is a threatened species in locations outside its geographical range (N. Europe). In Poland, the number of populations has decreased within the last 10 years, which prompted us to ...reintroduce propagated plants into natural habitats. We describe our activities: from obtaining the plant material, through in vitro propagation, ex situ cultivation, to translocation and one-year monitoring. We found that plants produced in ex situ conditions are able to survive in natural habitats, but their condition depends on the production process. We noted that when the plant material was collected in May or July and the in vitro seedlings were cultivated in soil from the end of October or December and until introduction into the natural habitat at the end of May the following year, all plants survived. This contrasted the 43% of survival rate when explants were collected in September and the seedlings were cultivated in soil from February. The short-term results indicate that the morphology of plants intended for reintroduction is of great significance. This is particularly important for planning methods of plant production and acclimatization. Finally we can conclude that in the case of S. lapponum, an initial evaluation of reintroduction success is possible after just one year.
Mineral fertilization of arable lands acts positively to boost the biological productivity of diverse ecosystems and the microbial activity of soils. The most common mineral fertilizers are nitrogen, ...potassium, and phosphorus. Experts agree that N is one of the most important factors controlling soil fertility and productivity, and in the growth and development of plants. Findings from recent chemical analyses have indicated that high rates of N fertilization tend to promote the formation of carcinogenic nitrosamines in soils. Experiments investigating the utilization of mineral N under diverse ecological conditions indicated substantial changes in microbiocenoses. Implications of these findings are considered.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
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